Logitech Announces the G633 & G933 Artemis Spectrum Headsets, First Headsets to Support Both 7.1 Dolby Surround Sound & DTS Headphone:X | High-Def Digest
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Logitech G933 Artemis Spectrum and Artemis Spectrum Snow Wireless 7.1 Gaming Headset - CareTek Information Technology Solutions
Logitech G933 Artemis Spectrum Wireless Gaming Headset review: The Logitech G933 is a premium gaming headphone with dual surround-sound technology - CNET